Improvement in mortisinq-machine



` To all whom it ma/y concer-m1:

ferent lignres.

gaat amm,

u' c'. c cniwd ARTHUR. 0., NEAL; 0F .HYDE PARK, MASSACHUSETTS.

Letters Patent N 95,129,dated September 21, 1869.

`IIWIPRCTVEIMENL IN MORTISING-MACHINE.

The' Schedule referred to in these Lettera Patent and making part of the same.

Be it known thatA I, ARTHUR O. NEAL, of Hyd Park, in the county -of Norfolk, and State of Massat Theobject of 'my invention is to produce a portable' hand-mortising machine for making` square or ,oblong holes, to be eect'ive and easily built and operated; and

' My invention consists in cutting a. square or oblong hole by means of a vertical `double-lip screw-auger,4

two sets of cutters, and circular saws, connected and operated bygears,and attached to a sliding frame of ered simultaneously'.

Referring to the drawings- A is a frame of a hand-drilling machine, with cranka common hand-'drillingmachine,.to be raised and low- )shaft B, gears D E, and stationary tnb'eF, all attached to the `sliding frame C, which is fed in the ordinary manner.` l

`To the lower portion of tube F is firmly secured a cross-head, consisting of ytwo 'horizontal arms, on

which revolve the gears ce', cutters d d', and circular saws e e', respectively.

Through tube F `passes the drill-stock g, with bevelgear E on'its upper, and bevel-gear b, with double-lip screw-auger a, at its lower end.

The bevel-gear b meshes into the .bevel-gears c c',

4and thus communicates motion-to the cutters;

Each of the cutters d d consist of two blades screwed upon `opposite 'sides of a pyramidal square block, to-

the ends of which the bevel-gear c c and circular saw e e are firmly secured. v

VThe diameters of the screw-augen and the circular 'saws e e correspond to' the width of the hole to be out. The cutters' dd are set in Such a manner that the cutting-edge revolves in. a line' with the teeth of the saw, and projects toward the auger until it reaches the circular hole previously cut by the latter.

\In operating the machine, motion will be imparted l vfrom crank-shaft B and bevel-gear D to bevel -gear E, spindle g, screw-auger-a, the screw taking hold of the material to be cnt, and drawing the tool into it, the double-lip cutting a circular hole of the required width; but bevel-gear b also sets the gears c c' in motion, and with them the" rotating cutters d d' and circular saws ce', the saws e e cutting the ends of the hole square, while the cutters cut out the material between the saws and the auger. Thus it will be seen that, bythis simple device, a

square or oblong hole can be cutwith4 great saving of labor, and but little expense, thus providing a very useful tool to carpenters and other workers in wood.4

Having thus fully described my invention, What I claim as new, and desire to secure by Letters Patent, is-

The double-lip screw-auger a, in combination with cutters d al and circular saws e e', when constructed in the manner and for the purpose substantially as described. v

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses..

ARTHUR 0. NEAL. ,L lWitnesses:

` CART-:DLL D. WRIGHT,

AUSTIN S HOWARTH. 

